Eat Broccoli - Folate turns up in green leafy vegetables such as spinach, Brussels sprouts and broccoli. Because usually old age are low hemoglobin count so they must have to eat these to to prevent anemia.

Eat less - those who can eat all they want, they become obese and prone to heart disease or diabetes that may lead to physical and mental impairment of an old age

Drink alcohol (in moderation) - A US study of older women found that those who reportedly have one or two drinks a day had a 40% lower risk of cognitive decline than those who claimed to drink nothing.